VBSC 421 Heart Anatomy General.

VBSC 421 Heart Anatomy General
ductus arteriosus - ANS-Name the fetal vessel that shunts blood from the pulmonary
artery to the aorta reducing blood flow to the fetal lung

ligamentum venosum - ANS-What does the ductus arteriosus become in the adult
animal

ductus venosus - ANS-Name the vessel that shunts blood away from the fetal liver to
the posterior vena cava

foramen ovale - ANS-Name the opening in the wall of the fetal right atrium that allows
blood entering the right atrium to pass directly to the left atrium

across capillaries in the placenta - ANS-Where does gas exchange take place in the
fetal cat

allows for flexibility in where the blood is directed - ANS-Amphibians have only one
ventricle; some reptiles have an incomplete interventricular septum. How is this
advantageous to these species?

4th right arch - ANS-Which arch persists in birds to distribute blood to the systemic
circulation

4th left arch - ANS-Which arch persists in mammals to distribute blood to the systemic
circulation

6th arch - ANS-Which arch persists as the pulmonary arteries

6th aortic arch - ANS-The ductus arteriosus, a component of the fetal circulation is
derived from which aortic arch?

pulmonary artery, aorta - ANS-The ductus arteriosus shunts blood from the _______ to
the _______ reducing blood flow to the fetal lung

liver, posterior vena cava - ANS-The ductus venosus shunts blood away from the fetal
_____ to the _______